Table 3–1: Maintenance schedule (continued)
Procedure Frequency Additional information
Change the rotary backing
pump's filter elements
Annually See Replacing the rotary
backing pump's filter elements
(Page 63)
3.2 Spare parts
To ensure that your system operates as designed, use only Waters Quality Parts. Visit
www.waters.com/wqp for information about Waters Quality Parts, including how to order them.
3.3 Replacing fuses
Warning: To avoid electrical fire, ensure that replacement fuses comply with the
ratings affixed to the rear panel of the module.
Warning: To avoid electric shock, disconnect the mass detector from the power
supply before replacing fuses. The mass detector has two fuses and uses double pole/
neutral fusing circuitry. Circuits can remain live even when one fuse has blown.
If either of the instrument's fuses, located on the rear panel, ruptures or becomes otherwise
faulty, replace it with a fuse of the following type and rating.
Table 3–2: Fuse information
Location Size Type Current
rating
Rupture
capacity
Voltage
rating
Rear panel 5 × 20 mm T 6.3 A H 250 V
3.4 Safety and handling
Be aware of the following safety considerations when performing maintenance procedures:
Warning: To avoid personal contamination with biologically hazardous or toxic compounds,
wear clean, chemical-resistant, powder-free gloves when performing this procedure.
August 20, 2021, 715005003 Ver. 04 (Previously released as Revision C)
Page 27
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